(I) A transformer has 360 turns in the primary coil and 120in the secondary coil. What kind of transformer is this, andby what factor does it change the voltage? By what factordoes it change the current?

(I) A transformer has 360 turns in the primary coil and 120in the secondary coil. What kind of transformer is this, andby what factor does it change the voltage? By what factordoes it change the current?

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter8: Electricity And Magnetism

Section8.5: Electromagnetism

Problem 8.3CE

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

(I) A transformer has 360 turns in the primary coil and 120
in the secondary coil. What kind of transformer is this, and
by what factor does it change the voltage? By what factor
does it change the current?

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